In nature this was probably obtained by prehistoric volcanic fires, and by the terrific pressure of immense rocks.

For an instant I caught a glimpse of those volcanic fires which he had damped down so long.

Under Ardath's)eet he felt the world shudder with the volcanic fires of creation.

He imagined himself carried on the back of such a bird, over volcanic fire, an enormous lake and a mountain range.

To my back, several peaks jutting up from the line of hills glowed with volcanic fires.

By this hour the volcanic fires of his nature had burnt down, and having drunk no great quantity as yet he was inclined to acquiesce.

I piled up logs, earth-wood, and lit them from the volcanic fires below.

The four elements that form Iceland's environment are volcanic fire, ice, water, and wind.

For the sky had grown pale of something other than volcanic fires and storms.

There were ancient volcanoes to the north, and much of this country has been torn and ruptured by volcanic fires long ago.